MALICIOUS
116
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm for distributing malicious content. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate malformed streams and a link farm strategy. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9905
Heuristics 6
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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://pixomot.ru/uplcv?utm_term=how+to+change+background+in+photoshop+express+android PDF link annotation
- http://stauarchitetti.eu/userfiles/files/20163497850.pdfIn PDF document text
- http://nhatrangpalacehotel.com/app/webroot/upload/files/10821914428.pdfIn PDF document text
- http://jainfarms.com/uploads/tezeg.pdfIn PDF document text
- https://korvioinfotech.com/ckfinder/userfiles/files/berodolilokitabemi.pdfIn PDF document text
- http://www.museopizarra.com/ckfinder/userfiles/files/rulitelobexunakazeko.pdfIn PDF document text
- http://mexvp.com/ckfinder/userfiles/files/wezoromojimakig.pdfIn PDF document text
- http://audyt.rowerowaszkola.pl/imgturysta/files/vuxoduzusufunomade.pdfIn PDF document text
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612fdca54086b---nufazafederalubi.pdfIn PDF document text
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144e39930350---fuxevut.pdfIn PDF document text
- https://grup-rul.ro/printuri-fi/files/84147436697.pdfIn PDF document text
- https://4cmedica.com/ficheiros_upload/file/rurudejogukamekekugi.pdfIn PDF document text
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1614475dbd020b---mibagofewefeluninumovi.pdfIn PDF document text
- https://hantverksakuten.se/ckfinder/userfiles/files/67958667603.pdfIn PDF document text
- http://vom-ragnaroek.de/uploads/file/83133579135.pdfIn PDF document text
- https://deitratech.com/userfiles/file/90625511855.pdfIn PDF document text
- http://w-w.cn/isee/pfm/cms/uploadfile/fck/file/8717598836.pdfIn PDF document text
- https://kochitaxirental.com/ckfinder/userfiles/files/19715821691.pdfIn PDF document text
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16133c6cab538b---pugazuzaxigim.pdfIn PDF document text
- http://americasbestwingspa.iorderfoods.com/uploads/files/62599858442.pdfIn PDF document text
- http://hotelniagararimini.eu/userfiles/files/63879570340.pdfIn PDF document text
- https://karaari.leaddeehub.com/userfiles/files/lekuzatukupuwafe.pdfIn PDF document text
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff16a84aca---41939816880.pdfIn PDF document text
- http://defhjdrjioo.friend-match.com/upload/files/nulukaribaxaxamuzusiw.pdfIn PDF document text
- http://sbcnepal.com/images/file/99791922758.pdfIn PDF document text
- https://bluza-shop.ru/content/File/31714764810.pdfIn PDF document text
- http://phongthuyphatloc.com/luutru/files/61164712520.pdfIn PDF document text
- http://wjcopy.com/upload/files/95672341538.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e6c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6C9 | 17184 bytes |
SHA-256: b562f1aa9a1065a6959b49a5148bcf7750a87e83fe56c18b548906f5d0264317 |
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font_01_sfnt_off00011340.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11340 | 11256 bytes |
SHA-256: d3cc823b5a80e384fe7cd9341b8157abbfbd979fc38dfd8698efc07cf18c64f4 |
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font_02_sfnt_off00012d3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D3F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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